Die-stock.



N0. 848,401. PATENTED MARi 26, 1907.

o. P. sonums.

DIE STOCK. in=;c.mnxolr nun 111112.29 1906..

TTES'I'. INVENTOR.

UNITED STATES PATENT wmram CHARLES F. SCHULTIS, CF WARREN, 011110, lXSSIGNOR T JAMES B. KING, OF MANTUA, CHIC).

DIE-STOCK.

Spcification of Lettets2aiaenb.

Pate1ited March 26, 19'07.

Application filed March 29,1906. Serial N0. 308,714.

T0 uZ/ ui7w7n 712% may conaern:

Be it known that I, CHARLES F. SCHULTIS,

a citizen of alle U1'1ited States, residing at Warren, in the county 0f Trumbull and Starte 0f Ohio' have invented certairi ne'w and useful Improvements in Die-Stocks; and I do declarc that the following is a full; clear, and

exact description 0f tl1e invention, Wliieh will ena-ble other s sk'illed in the art to Wl1ich it appert ains t0 make and use the samc.

-My invention relates w improvements ih' d1es ior tl1reading p1pes and 'otl1er met-al tubes;- and the invention consists in the construction and combination nf partssubstantially as sl1own and descrined and particularly pointed Gut in the claim.

I tho device, adapted to carry tlie dies l) an l engaged witlx tl1e work-supporting holder B by its throaded hub a, tl1rcaded its entiro depth externally and 011 wlhich the work suporter 0r holder is engaged and adapted to )e used, as will hereinafter appear. Said part B has an intcrnally-nzirrowed outer ring portion b, through which are inscrted a series,

say, of tl1rcc set-screws 2, adapted to ongage and securethe worl and ab its innor end tl1ere is :1{1 outer flange 3, 0Wr wl1iclx tl1e lips c 0n r0c fing arms C areaflaptml t0 cngage, espe cially wl1en said arms gne forced and held inward at tlmir 'longor ends pressure comcs from the dircction ol' tllo dies l) aginst; their slxorter ends, die pivots of said arms being at 4, al out tlm vdgo ol tl1e suid carrying-head, back ol'and inwmd l1um Ll1o, l oxos 0r guidocl1zunbcrs d l'0r thu dies. chamlmrs LIQ radially disposed :md hzwc onfining ril s 0r [langos 0 un lmtl1 sidcs along tlu zir 0utor edgos to vnguge over tl10 sido cdges ol Um (livs und online tlu:m in working position, und um shorl unds uf nrms C projcct t0 Ehe 10, ol' snid l oxus ut tlmir rcar and tl1 10:1I' 0l Ll|c lmxos ur(v 0pcn, so LlliLi) tlxe dies may buar ugaint suid nrlns (lire(:tljf or by set-screws E. These sc-rews pass olmrough the said slxort ends of arms Cso as to l e in positiorx to l ear against thu rcar cnds of dies D, and lock-rluts 7 on said surevvs serve to fix s nd hold their adjustmepts. The die-carrying head A also is provided with threaded handle%ockets 8, t0 which operating-hzindles may be appliecl, and when the die is being us ed the head A isrotated byineans of these handles and the dies are operatively engaged upon the work,wnichprojdcts'tl1rough from the rear and is l1eld fast'by holder B and its wrk-lockin'g screw's 2.

Externally ehe Work-holcler has a perfectlyi smooth surface 10, tpered from its immer to its outer edge or e'nd, and tl1e said arms C b ear on this srnooth tapered s'urface by theirlips 012 projections c and travel there0n during tlae operatioii. Furthermore, the pivot 4 is al out two-thirds the length of arms C from 1:l1e longer end, and hnce if a piece 01 work, as a pipeor tube, has a certain taper 0n wliich itis eo be threaded or is to be threaded o0 a certain taper the surface 10 of the Workl1older must taper twice as' much o0 aocom .modat-e the action 0f said arm's to the work A die-stock having a head with an eXter-' nally-threaded hub and die-boxes open at l oth en ls a work-holder threaded on said hul und having an Outwardl'y-projecting lange about its inner end a'nd a bev6led surface, and arms pivoted nearest one enden said head and having -their short ends exposd 'at the rear of said die-box'es and thei r longcr erids adapted to engage Said flance a.nd lim it 1he 'movement 0f said head and workfixolder and t0 travers e said bevel'ed surface. 1

In testimony whereofl sign thiS specificeition in the presencc of two witnes ses.

CHARLES F. SCHULTIS. Witnesss:

R. B. MOSER, JAMES B. KING. 

